نتایج جستجو برای: alosa caspia
تعداد نتایج: 392 فیلتر نتایج به سال:
Occurrence and distribution of larval and juvenile fish was investigated in nearshore waters of the southeastern Caspian Sea including the Gorgan Bay. Samples were collected during seven surveys using a fine mesh beach-seine in five sampling sites from July 2014 to June 2015. A total of 15500 individuals mostly juvenile were captured, representing 18 species from 8 families. Most juveniles belo...
In this study, hepatosomatic, gonadosomatic and condition of Alosa species were studied. A sampling were done from 5 stations (Rossdar, Clachay , Chaboksar, Chamkhala and Kiyoshahr) was arried out on the eastern coast of Gilan in 2016. A total of 693 sampling fish were collected. Samples were transferred to the laboratory in 10% formalin formaldehyde. Three species of Alosa namely Alosa.braschn...
During multiple annual spawning runs from 2013 to 2021, over 9,000 mature anadromous alewife (Alosa pseudoharengus A. Wilson, 1811) were monitored with passive integrated transponders (PITs) in four rivers of the Chignecto Isthmus, Bay Fundy, Canada. A subsample 384 individuals tagged during 2016–2019 aged 3 6 years (mean ± SD; 4.2 0.7 years, n = 232, males; 4.5 152, females). Biotelemetry reve...
بیوسیستماتیک سرده viola در شمال ایران از لحاظ مورفولوژیکی، آناتومیکی، گرده شناسی و ملکولی مورد مطالعه و بررسی قرار گرفت. مطالعات آناتومیکی بخش های مختلف ریشه، ساقه، برگ و دمبرگ مورد بررسی قرار گرفت. نتایج نشان داد که صفات مورد بررسی در تمایز بخشه ها و گونه ها مفید هستند. بر این اساس دو گونه v. alba ssp. alba و v. sintenisii، در برش های ریشه، در وجود یا عدم وجود مغز از یکدیگر متمایز گردیدند. دو ...
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